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Nikitich [7]
3 years ago
9

10pts Body Systems Interactions WebQuest Choose 7 out of the following 10 situations and use the Internet to research and write

an answer to the two questions. Remember to write the answers in your own words and to cite the sources of your information. Copying materials will result in a zero for the assignment. What two (or more) systems are involved in this process? How are they involved? Situations Playing a video game Getting energy to sit through class by eating cereal and a banana Going through puberty Touching a hot pan and yanking your hand away Jumping up and down Drinking water on a hot day Sneezing Blushing Hitting your head on the top of the car as you get into it Breathing harder during a jog For Example: Delivery of oxygen to the blood Answer: The respiratory system draws in oxygen-filled air from the environment through the nose and trachea to the lungs. In the tissues of the lungs, blood vessels cover the tiny air sacs called alveoli. Here, the oxygen is exchanged with the carbon dioxide being dumped by the blood. As part of the circulatory system, the heart pumps the blood to the lungs, and then to the rest of the body through arteries and veins, to deliver the oxygen to all the cells and pick up the carbon dioxide.
Chemistry
1 answer:
GuDViN [60]3 years ago
6 0
<span>systems are involved in this process, How are they involved? 
The way that you touching </span><span> a hot pan and yanking your hand away is your body saying that "Aye, This isn't right" and our nerves go to the source where you had touched the hot pan... sending the signals to your brain,  Your hand might have a small blister..the reason why that is, because its your bidy naturally healing its self with an internal wound</span>
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An aqueous solution of iron(II) iodide has a concentration of 0.215 molal. The percent by mass of iron(II) iodide in the solutio
Basile [38]

Answer:

6.24%

Explanation:

Molality by definition means a measurement of the number of moles of solute in solution with 1000 gm or 1Kg solvent. Notice the difference that Molarity is defined on the volume of solution and Molality on the mass of solvent.

So, An aqueous solution of iron(II) iodide has a concentration of 0.215 molal.

means 0.215 moles are present in 1 Kg of solvent.

The molar mass of Fe2I = 309.65 g / mole

mass of FeI2 = moles x molar mass

= 0.215 x 309.65

=66.57 gm

mass % of FeI2 = mass of FeI2 x 100 / total mass

= 66.57x 100 / (1000 +66.57)

= 6.24%

                           

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Which element has the same number of energy levels as aluminum (Al) and the same number of valence electrons as calcium (Ca)
GREYUIT [131]

Answer:

magnesium (Mg)

Explanation:

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3 years ago
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5. Water is known to have a composition which is 88.8% oxygen by mass. If you had a
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4 0
3 years ago
A sample of gas with an initial volume of 12.5 L at a pressure of 784 torr and a temperature of 295 K is compressed to a volume
Kipish [7]

Answer:

Final pressure in (atm) (P1) = 6.642 atm

Explanation:

Given:

Initial volume of gas (V) = 12.5 L

Pressure (P) = 784 torr

Temperature (T) = 295 K

Final volume (V1) = 2.04 L

Final temperature (T1) = 310 K

Find:

Final pressure in (atm) (P1) = ?

Computation:

According to combine gas law method:

\frac{PV}{T} =\frac{P1V1}{T1} \\\\\frac{(784)(12.5)}{295} =\frac{(P1)(2.04)}{310}\\\\33.22 = \frac{(P1)(2.04)}{310}\\\\P1=5,048.18877

⇒ Final pressure (P1) = 5,048.18877 torr

⇒ Final pressure in (atm) (P1) = 5,048.18877 torr / 760

⇒ Final pressure in (atm) (P1) = 6.642 atm

3 0
3 years ago
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